CITIZEN Bluetooth Watch is the official app designed for iPhone users to connect and synchronize their CITIZEN Bluetooth watches (Bluetooth version 4.0 or later). This app allows users to set the time, alarms, and receive notifications for calls, emails, and texts. Additionally, it offers features such as time sync, local time setting, call and message notifications, alarm setting, light level indicator, smartphone search, and link loss alert.

With CITIZEN Bluetooth Watch, users can enjoy the accurate timekeeping of an analog watch combined with the convenience of smartphone connectivity. The app is optimized for iPhone 5 and later, requiring iOS 9.3 or later for operation. It also showcases CITIZEN’s Eco-Drive technology, eliminating the need for battery replacements by harnessing light as a power source.